document.write( "Question 172734: I'm not sure if i am in the right area, but could someone please help me?
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document.write( "Solve by the substitution method.
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document.write( "5x + 7y = 7
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document.write( "-8x + y = 62\r
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document.write( "What is the solution of the system? (Type an ordered pair. Type N is there is no solution.\r
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #127613 by Alan3354(69443) You can put this solution on YOUR website! Solve by the substitution method. \n" ); document.write( "5x + 7y = 7 \n" ); document.write( "-8x + y = 62 \n" ); document.write( "---------- \n" ); document.write( "y = 8x+62 (from the 2nd eqn) \n" ); document.write( "Sub into eqn 1 \n" ); document.write( "5x + 7*(8x+62) = 7 \n" ); document.write( "61x = -427 \n" ); document.write( "x = -7 \n" ); document.write( "--------- \n" ); document.write( "-8*(-7) + y = 62 \n" ); document.write( "y = 6 \n" ); document.write( "------ \n" ); document.write( "(-7,6) is the intersection of the 2 lines. \n" ); document.write( " \n" ); document.write( " |